Joseph a



(No Model.)

J. A. SMITH.

ROOFING AND LINING FELT. No. 449,636. Patented Mar. 31,1891.

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UNITED STATES.Y

PATENT OFFICE.

JOSEPH A. SMITH,OF BOONTON, NEW JERSEY, ASSIGNOR TO THE POWER- VILLEFELT ROOFING COMPANY,

(LIMITED,) OF NEWF YORK, N. Y.

ROOFING AND LINING FELT.

SPECIFICATION forming part of Letters Patent No. 449,636, dated March81, 1891.

Application led October 23, 1890.

To all whom it may concern:

Beit known that I, JOSEPH A. SMITH, a citizen of the United States,residing at Boonton, in the county of Morris and State of New Jer sey,have invented new and useful Improvements in Roong and Lining Felts; andI do hereby declare the following to be a full, clear, and exactdescription of said invention, reference being had to the accompanyingdrawings, and to the letters or figures of reference marked thereon,which form a part of this specification.

My invention relates to new and useful improvementsl in rooting andlining felt; and the object of the invention is to provide the felt withslightly-raised portions or ribs at certain distances from the edge andrunning longitudinally of the sheetfor the purpose of formingguide-lines for the nails, and by which the overlapping of one sheet onanother in the process of roofing or lining may be gaged and the workgreatly facilitated.

The invention consists in forming on the sheet of felt inthe process ofmanufacture one or more longitudinal ribs running parallel to the edgeof the sheet and formed by press'- ing outward the felt to give aslightly-raised line on its surface. This is preferably accomplished byincorporating in the single sheet of felt while in a plastic or pulpystate any suitable fibrous material in the form of strands or threads,which are so embedded as to produce a raised line on the surface ofthefelt. This raised portion can be produced by depressing the felt on oneside to form a raised portion on the other side.

In the accompanying drawings, Figure 1 is a perspective view of aportion of a sheet of felt provided with the raised guide-lines andformedby the incorporation of threads. Fig. 2 is an end view of thesheet shown in Fig. l. Fig. 3 represents an end view of two sheets,showing the application of the guide-lines and also showing amodiication in the formv of lines. v

Referring to the drawings by letter, a indicates the sheet of felt,having formed there- Serial No. 869,051. (No model.)

on and of the same material and body the longitudinal raised portions b.As before stated, this raised line of felt b is preferably formed bybulging the felt out on the surface in a line or lines parallel to thelongitudinal edge of the sheet by incorporating in the single sheet whenin its pulpy` or plastic condition before it becomes a completed productthe threads c.

The incorporation of threads in felt for the purpose of making the sametenacious I am aware is not new; and while the incorporation of thethreads will have this advantage in my invention they are primarilydesigned to produce the raised line upon the surface of the felt by themanner of incorporating and the process of manufacture.

In Fig. 3 I have shown the application of the guide-lines b, and alsoshowing a modification in the form of guide-line, which in this case issimply a ridge either molded on or pressed outward on the upper surfaceby a corresponding depression of the under side.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s-

l. A sheet of felt, for roofing, lining, and other purposes, having oneor more raised lines or ridges running parallel to the edge of thesheet, substantially as and for the purpose set forth.

2. A sheet of felt, for roofing, lining, and other purposes, having oneor more raised lines or ridges running parallel to the edge of the sheetand formed by incorporating in the sheet threads or similar material,substantially as described, whereby a portion of the felt-surface iscaused to bulge and form guidelines, substantially as and for thepurpose set forth.

In testimony whereof I affix my signature in the presence of twosubscribing witnesses.

JOSEPH A. SMITH.

Viitnesses:

EDWARD A. DAY, THOS. S. CRANE.

